Dual pump



FIG. 1 is a perspective view of a dual pump showing an embodiment of the design of the invention.

FIG. 2 is front view thereof.

FIG. 3 is a back view thereof.

FIG. 4 is a side view thereof, the opposite side being a mirror image thereof.

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

CLAIM The ornamental design for a dual pump, as shown and described. 